Please use this identifier to cite or link to this item: https://doi.org/10.1002/fuce.200600037
DC FieldValue
dc.titleIncreased metal utilization in carbon-supported Pt catalysts by adsorption of preformed Pt nanoparticles on colloidal silica
dc.contributor.authorZeng, J.
dc.contributor.authorLee, J.Y.
dc.contributor.authorChen, J.
dc.contributor.authorShen, P.K.
dc.contributor.authorSong, S.
dc.date.accessioned2014-06-17T07:43:11Z
dc.date.available2014-06-17T07:43:11Z
dc.date.issued2007-08
dc.identifier.citationZeng, J., Lee, J.Y., Chen, J., Shen, P.K., Song, S. (2007-08). Increased metal utilization in carbon-supported Pt catalysts by adsorption of preformed Pt nanoparticles on colloidal silica. Fuel Cells 7 (4) : 285-290. ScholarBank@NUS Repository. https://doi.org/10.1002/fuce.200600037
dc.identifier.issn16156846
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/64093
dc.description.abstractPt/C electrocatalysts, aimed at maximizing the electrochemical surface area (ECSA) and consequently the specific mass activity of fuel cell reactions, are obtained by firstly depositing Pt nanoparticles on colloidal silica (Pt-silica), followed by the adsorption of the latter onto a carbon support. This method of catalyst preparation increases Pt metal utilization and generates accessible void space in the interpenetrating particle network of carbon and silica for the facile transport of reactants and products. Both electrochemical hydrogen adsorption/desorption and CO oxidation measurements show an increase in the ECSA using this approach. Methanol electrooxidation is used as a test reaction to evaluate the catalytic activity. It is found that the silica modified catalyst is three times as active as a catalyst prepared without silica, under otherwise identical conditions. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/fuce.200600037
dc.sourceScopus
dc.subjectCarbon support
dc.subjectColloidal silica
dc.subjectElectrocatalysts
dc.subjectMetal utilization
dc.subjectMethanol electrooxidation
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1002/fuce.200600037
dc.description.sourcetitleFuel Cells
dc.description.volume7
dc.description.issue4
dc.description.page285-290
dc.identifier.isiut000248849000004
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